PIC16F1507T-ESSQTP datasheet(76/266 Pages) MICROCHIP

tên linh kiện	PIC16F1507T-ESSQTP

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Preliminary

DS41586A-page 76

PIC16(L)F1507

Even if the flag bits were checked before executing a

SLEEP

instruction, it may be possible for flag bits to

become set before the SLEEP instruction completes. To

determine whether a SLEEP instruction executed, test

the PD bit. If the PD bit is set, the SLEEP instruction

was executed as a NOP.

FIGURE 8-1:

WAKE-UP FROM SLEEP THROUGH INTERRUPT

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

CLKIN(1)

CLKOUT(2)

Interrupt flag

GIE bit

(INTCON reg.)

Instruction Flow

Instruction

Fetched

Instruction

Executed

PC + 1

PC + 2

Inst(PC) = Sleep

Inst(PC - 1)

Inst(PC + 1)

Sleep

Processor in

Sleep

Interrupt Latency(4)

Inst(PC + 2)

Inst(PC + 1)

Inst(0004h)

Inst(0005h)

Inst(0004h)

Forced NOP

PC + 2

0004h

0005h

Forced NOP

T1OSC(3)

PC + 2

Note

External clock. High, Medium, Low mode assumed.

CLKOUT is shown here for timing reference.

T1OSC; See Section 25.0 “Electrical Specifications”.

GIE = 1 assumed. In this case after wake-up, the processor calls the ISR at 0004h. If GIE = 0, execution will continue in-line.

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